Tooling device for stone and the like.



, C. N. JOHNSON. TooLING DEVICE EOE STONE AND THE LIKE.

APPLIOATIQN FILED FEB. 15, 1911.

' Patented Aug. 15, 1911;

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CARL N. JOHNSON, OF AMHERST, OHIO.

TOOIIING DEVICE FOR STONE AND THE LIKE.

Specification of Letters Patent.

Application led February 15, 1911. Serial No.-608,763.

efficient means for tooling the'surface ofbuilding stone, such as ashlar, etc.

At present thesurface of stone is tooled manually by hand-tools, which method is laborious and expensive, while this invention is embodied in a plurality of carborundum or other abrasve 'disks suitably mounted on a shaft, which upon being revolved mechanically give a tooling eect to `stone brought in contact therewith, as will be hereinafter described.

The invention is illustrated in the accompanying drawings,.in which/similar reference characters indicate similar parts, and in which- Figure 1 is an end view of the device, and Fig. 2 is a vertical central section thereof, parts thereof being shown in full.

Referring specihcally to the drawings the plurality of carborundum or abrasive disks are shown at 3 and have the-periphery thereof conveXed as indicated at 4. These disks 3, which are of equal diameter and of suitable thickness, are mounted on the shaft 1Q by means of central holes therethrough. As shown, the means employed to clamp or mount the disks on the shaft 12 consists of a plate -let at one end having a collar 13 and rigidly secured to the shaft by a cotter pin 15, and a similar plate fat the other end having an internally threaded collar 11 engaging the externally threaded revoluble sleeve 8 on the said shaft. This sleeve 8 has an exposed end 8 which is of a hexagonal cross section for convenience in turning same, and a screw 9 engages an annular groove 7 'in the shaft 12 to prevent longitudinal movement of the sleeve. A pulley wheef 17 is also mounted on theshaft 12 for revolving same by mea-ns of a belt 18. This shaft can be revolved, however, in any convenient manner. The ends of the shaft are j ournaled in the bearings 6, which are' suspended or supported 1n any convenient manner.

The inner faces of the plates 5 and l-t are toothed or roughened as shown, respectively, at 1() and 1G. The said plates are therefore adapted to tightly grip and clamp the disks 3 together, and by turning the sleeve Sit will be seen that the plates 5 and 14 can either be brought together or separated.

Inuse, the disks which in their assembled position form a wheel having a corrugated or crimped surface are revolved at a sui-table Patented Aug. 15, 1911.

speed and the stone, as shown at 20, in being y brought into a tangential relation therewith is given a iuted surface 19, which resembles a tooling effect. A

This device can be used in connection with stone and marble planers, or can be used in various other ways familiar in the art. It is also understood that this invention can be altered in its details within the scope of the appended claims, and it is not desired to limit same to the specific construction shown and described.

Having described my invention, what I claim as new is 1. -A device of the character described comprising a plurality of abrasive disks having convexed peripheries and central holes therethrough, a shaft passing through the/ said holes, a plate on the said shaft at one end of the said disks and rigid lwith the said shaft, a plate on the said shaft at the opposite end of thev said disks having a threaded collar, and a threaded sleeve rotatably mounted on the said shaft having screw engagement with the said collar and having an exposed end bearing means for turning same to move the latter plate longitudinally. f

2. A device of the character described comprising a plurality of abrasive disks having conveXed peripheries and central holes therethrough, a shaft passing through the said holes, a plate on the said shaft at one I end of the said disks and rigid with the said shaft, a plate on the said shaft at the opposite end of the said disks having a threaded collar, a threaded sleeve rotatably mounted 0n the said shaft having screw engagement with the said collar, means for preventing longitudinal movement of the said sleeve, and mea'ns'for rotating the said sleeve to move the latter plate longitudinally.

3. A device of the character described' comprising a plurality of abrasive disks having convexed peripheries and central holes therethrough, a shaft passing through the said holes and having an annular groove therein at one end of the said disks, a plate on the said shaft at the other end of the said disksA and rigid with the said shaft, a

lplate at the opposite end of the said disks having a threaded collar, a threaded sleeve rotatably mounted on the said shaft and having a screw engagement with the said collar, a screw mounted in the said lsleeve and engaging in the said annular groove, 10 and means for turning the said sleeve to move the latterl plate' longitudinally. In testimony whereof-I do aiix my signature in presence of two Witnesses.

, CARL N. JOHNSON. Witnesses: f l

J. B. GHJLETTE, B. S. Gmm. 

